Asynchronous appearance of embryonic cardiac activity in multiple pregnancies following in-vitro fertilization.
Schats
R
R
Jansen
C A
CA
Wladimiroff
J W
JW
D047108:Embryonic Development; D005260:Female; D005307:Fertilization in Vitro; D005318:Fetal Heart / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D016216:Ultrasonography, Prenatal